I wrote...

• A userland Mach-O loader for Linux
• Can run simple programs for Mac (hello world, ...)
• Can run CLI tools for Mac (otool, ld, gcc, clang, ...)
• Apple's GCC with my loader can compile Chrome
• Cannot run GUI applications (Safari, iTunes, ...)
• Cannot run even some CUI applications (poor coverage)
• https://github.com/shinh/maloader